Survival Analysis PROC PHREG 2 tailed test

Cruise — Tue, 24 Jul 2018 15:08:46 GMT

Hi guys, below is my proc phreg model snapshot.

Do you know how to define two-tailed test in the code below? so that my Pr>ChiSq in the SAS output is adjusted to two-tailed test?

ods trace on;
proc phreg data=p.temp2;
	class A10(ref='30-39') combo1(ref='0') combo2(ref='0') ....
/param=ref order=internal;

model duration*vital_status1(1)=combo1 combo2 .../ties=Efron rl;
where stage1=4;
run;
ods trace off;

Re: Survival Analysis PROC PHREG 2 tailed test

FreelanceReinh — Wed, 25 Jul 2018 12:27:03 GMT

Hi @Cruise,

Can you please clarify what are the null and alternative hypotheses for the statistical test you want to perform?

topic Survival Analysis PROC PHREG 2 tailed test in Statistical Procedures

Survival Analysis PROC PHREG 2 tailed test

Re: Survival Analysis PROC PHREG 2 tailed test